Stump-puller.



No. 633,528. y Patented oct. l, |901,

T. URI-E.

sTuuP PuLLEn. Application med Nuvj 1s; 1900.)

UNITED STATES- 'PATENT OFFICE.

THOMAS URIE, OF BOYDEN, MICHIGAN, ASSIGNOR OF ONE-HALF TO BERT M. ADAMS, OF VINN, MICHIGAN.

STUlVlP-PULLER.

SPECIFICATION forming part of Letters Patent No. 683,528, dated. October 1, 1901.

Application iiled November 13,1900.` Serial No. 36,330. (No model) To ctZZ whom, t may concern.:

Be it known that I, THOMAS URIE, a citizen of the United States, residing at Boyden, in the county of Isabella and State of Michigan, have invented certain new and useful Improvements in Stump-Fullers, of which the following is a speciiication, reference being had therein to the accompanying drawings.

The invention relates to stump-pullers; and it consists in the peculiar construction and arrangement of parts.

More particularly, theinvention consists in the construction of the winding-drum, and, further, in the construction and manner of bracing the upper portion of the framework, all as more fully hereinafter described and claimed. Y

In the drawings, Figure 1 is a side elevation of al stump-puller. Fig. 2 is a perspective view of the upper portion of the frame and the winding mechanism. Fig. 3 is a horizontal section substantially on line c x, Fig. 1. Fig. 4 is a front elevation showing the clutch for the Winding-drum and mechanism for releasing the same, and Fig. 5 is a vertical longitudinal section through the windingdrum.

The frame of the machine is in the form of a tripod, comprising a rearwardly-extending leg member A and laterally and forwardly extending leg members B and C. The latter are provided at their lower ends with the swiveled wheels or casters D, while the member A is preferably provided with a swiveled shoe E. At their upper ends the legs B and O bear upon opposite sides of the member A and are secured thereto by the bolt a.

F and G are cross girths or braces secured at their rear ends to the member A and at their forward ends respectively to the members B and O, projecting beyond the same, asishown. Supported upon the projecting portions of said braces F and Gis a cross-bar H, which is bolted to the braces F and G and also to the members B and O. This bar H forms a support for the central bearing I, in which the lower end of the drum-shaft J is journaled, the upper end of said shaft being journaled in a bearing K, secured to the forwardly-proj ectin g upper end of the member A.

L and L' are bars secured at their rear ends to opposite sides of the memberA and at their forward ends supported upon the bar H. Between these bars is arranged the sheave M, journaled on a bolt oraxle M', passing through said bars.

N is a brace-rod connecting the members B and O to each other near their upper ends.

O and O' are brace-rods respectively connecting the member A to the members B and C, as shown in Figs. 2 and 3.

P is a sweep pivotally secured to the upper end of the drum shaft J above the bearing K. Q is a drum sleevedupon the shaft J and connected thereto by a clutch of the following construction: R is a pin projecting from the shaft J and adapted to engage the slot S inthe upper end of the drum. T is a collar secured to the shaft J above the drum Q. U is a bifurcated lever having antifriction-rolls U', resting upon the upper face of the drum Q, and the antifriction-rolls U2, adapted to bear upward against the lower face of the collar T. The lever U extends laterally to the side of the frame and is held in position by the slotted guide V, secured to the crossbar H and engaging with the pin W, projecting from the lever in line with the rolls U. The drum Q is provided at its upper end with an eye or hook X, to which the end of the hoisting-cable X' may be attached. The shaft J is of suflicient length to permit of a longitudinal as well as a rotary movement in its bearings without disengaging therefrom.

The parts being constructed and arranged as described, in the operation of the device the cable X is secured to the hook X on the drum Q and is then passed over the sheave M and is looped downward, the end being preferably secured to the pin Y, secured to the cross-bars L and L. A suitable pulleyblock Z is then suspended from the loop of the cable, and this block is provided with a hook, to which a chain surrounding the stump may be attached.

The rotation of the sweep P will cause the cable X to be wound upon the drum Q, which Willshorten the loop in the cable and lift the stump. As the cable winds upon the drum in a spiral form the line of draft would con-l stantly vary if the drum were held from longi tudinal movement. This I have prevented by making the shaftJ of sufficient length to permit of a longitudinal movement in the bearings I and K. Thus as the drum isrotated it will gradually rise, so that the line of draftt'. e., the line of that portion of the cable between the drum and the sheave M-Will remain horizontal. In this lifting movement of the drum the latter remains locked to the shaft J by the clutch mechanism, which is so constructed that it is permitted to rise with the drum without disengagement.

After the stump is lifted and moved to the desired position it may be dropped without the necessity of unwinding the drum. To accomplish this, the lever U is operated by means of a rope attached to the operating end thereof and extending downwardly, which will cause the rolls U to bear upon the drum Q and the roll U2 upon the collar T. The result will be that the drum and collar are forced apart, which will draw the pin R ont of engagement with the slot S, thereby releasing the drum from the shaft and permitting it to quickly unwind. As soon as the leveris released the drum will be again thrown into engagement with the pin R on the shaft either by gravity or preferably by a spring Q, arranged between the upper end of the drum and the collar J on the shaft.

The construction of the frame is such as to secure great strength without making the members unnecessarily heavy. Thus the sheave M is supported upon the bars L and L', which in turn rest upon the cross bar H, while the latter is supported on the projecting ends of the bars F and G. These parts are all firmly secured to each other by bolts,

and an additional element of strength is l imparted by the metallic brace-rods N, O, and O.

What I claim as my invention isV 1. In a stump-puller, the combination with a tripod frame, of shaft-bearings thereon, a winding-shaft journaled in said bearings and adapted to move longitudinally therein, a sweep for rotating said shaft, a winding-drum sleeved upon said shaft, a clutch normally holding said shaft and drum in engagement, a lever for releasing said clutch, a hoistingcable connected to said drum, and a sheave journaled in said frame over which said cable passes; said shaft, drum, clutch, and operating mechanism therefor being adapted to move longitudinally to compensate for the spiral winding of the cable on said drum, and said clutch being adapted to be operated to release said drum at any point in the winding.

2. A stump puller, comprising a tripod frame, consisting of the members A, B and C the cross-girths F and G, the cross-bar H supported upon forward projections of said crossgirths, the lbars L and L' extending from said bar H to the member A, the sheave M journaled between said bars L, L', a windingdrum jonrnaled in bearings in the bar H and upper end of the member A, and the braces N, O and O', substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two Witnesses.

THOMAS URIE.

Witnesses:

CHARLES HARRISON, FRANKLIN S. RoBlNsoN. 

